[FX.php List] Undefined Index Error

[VanBuskirk, Patricia]

Has anyone else had any problems using php with FMP 9 in getting the
following type error:

Notice: Undefined index: BasicSvc_Features in
C:\Inetpub\wwwroot\Forms\TSR\orderconfirm.php on line 14

NOTE:  I only receive this error if any CHECKBOXES are left unchecked on
the form.  Then I will receive one line for each checkbox left
unchecked.  Any other type field left blank will not produce this error.